All 3M™ Bumpon™ protective products feature a 3M™ Bumpon™ protective product SJ5302 is a self-adhesive rubber bumper designed to be used as feet, stops and spacers. The hemispherical shape provides excellent sound damping and energy absorption. Bumpon™ blister packs are individually packed pads of the most popular Bumpon™ protective product shapes. These protective products are pressure sensitive self adhering polyurethane bumpers, that can be used as feet, stops, spacers and protectors in many applications. Standard lead time is 28 calendar days. Thane composition.